h1,h2,h3{
    color:blue;
    font-family: 楷体, serif;
}
/*内部没定义的全部*/
body{
    color:green;
}
/*只有li中的strong才改*/
li strong{
    color: #7fff78;
}

#pid{
    color: red;
}

#pid2 a{
    color: rebeccapurple;
}

.pclass{
    color: cadetblue;
}
